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T2-135 appears to have failed

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  • jmg.1961
    I just purchased a T2-135 last week and installed it in my DR-135. It was working well up through this afternoon. I have been logging data on my computer from
    Message 1 of 3 , Oct 9, 2011
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      I just purchased a T2-135 last week and installed it in my DR-135. It was working well up through this afternoon.

      I have been logging data on my computer from the serial port and this evening I noticed that the T2-135 was no longer reporting data and it did not respond to the keyboard. I tried taking the radio in and out of data mode and cycling power but it no longer responded. I just got some garbage characters when I first enabled it.

      I took the bottom cover off the radio and observed that as soon as the radio was put in data mode the red and green LEDs started flashing continuously about twice per second.

      I removed the T2-135 from the radio and connected an external T2 and that still works fine.

      It looks like the T2-135 has died.

      Anything else I could try?
    • Scott Miller
      Sounds like maybe the firmware was corrupted somehow. Turn it off, start otwincfg, disable turbo mode, click connect , and then turn on the radio and make
      Message 2 of 3 , Oct 10, 2011
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        Sounds like maybe the firmware was corrupted somehow. Turn it off,
        start otwincfg, disable turbo mode, click 'connect', and then turn on
        the radio and make sure it's in data mode. That should get you a prompt
        to upload new firmware.

        Sometimes the wiring inside the DR-135, from the T2 board to the rear
        DB9, is a little flaky and it doesn't handle high speed data very well.
        Disabling turbo mode usually fixes that.

        Scott

        On 10/9/2011 5:28 PM, jmg.1961 wrote:
        > I just purchased a T2-135 last week and installed it in my DR-135. It
        > was working well up through this afternoon.
        >
        > I have been logging data on my computer from the serial port and this
        > evening I noticed that the T2-135 was no longer reporting data and it
        > did not respond to the keyboard. I tried taking the radio in and out of
        > data mode and cycling power but it no longer responded. I just got some
        > garbage characters when I first enabled it.
        >
        > I took the bottom cover off the radio and observed that as soon as the
        > radio was put in data mode the red and green LEDs started flashing
        > continuously about twice per second.
        >
        > I removed the T2-135 from the radio and connected an external T2 and
        > that still works fine.
        >
        > It looks like the T2-135 has died.
        >
        > Anything else I could try?
        >
        >
      • jmg.1961
        Thanks Scott, that did it. The board is operating again. Started testing again. Mike N3MUY
        Message 3 of 3 , Oct 11, 2011
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          Thanks Scott, that did it.
          The board is operating again.
          Started testing again.

          Mike
          N3MUY


          --- In tracker2@yahoogroups.com, Scott Miller <scott@...> wrote:
          >
          > Sounds like maybe the firmware was corrupted somehow. Turn it off,
          > start otwincfg, disable turbo mode, click 'connect', and then turn on
          > the radio and make sure it's in data mode. That should get you a prompt
          > to upload new firmware.
          >
          > Sometimes the wiring inside the DR-135, from the T2 board to the rear
          > DB9, is a little flaky and it doesn't handle high speed data very well.
          > Disabling turbo mode usually fixes that.
          >
          > Scott
          >
          > On 10/9/2011 5:28 PM, jmg.1961 wrote:
          > > I just purchased a T2-135 last week and installed it in my DR-135. It
          > > was working well up through this afternoon.
          > >
          > > I have been logging data on my computer from the serial port and this
          > > evening I noticed that the T2-135 was no longer reporting data and it
          > > did not respond to the keyboard. I tried taking the radio in and out of
          > > data mode and cycling power but it no longer responded. I just got some
          > > garbage characters when I first enabled it.
          > >
          > > I took the bottom cover off the radio and observed that as soon as the
          > > radio was put in data mode the red and green LEDs started flashing
          > > continuously about twice per second.
          > >
          > > I removed the T2-135 from the radio and connected an external T2 and
          > > that still works fine.
          > >
          > > It looks like the T2-135 has died.
          > >
          > > Anything else I could try?
          > >
          > >
          >
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